The first part of the hypothesis might be provable and very soon if the Rover continues to function. The second part I find no documentation to support.
You're most welcome, just my small contribution to a wonderful site. Below is another with some interesting objects.
In reference to your other post, I think we should all be patient and let NASA do their thing. That said, I personally believe they are wasting time and opportunity by not utilizing all the resources and methods of discovery at their disposal and by playing with the "power tools" on Spirit instead of capturing as many surface images with the Microscopic Imager. I think they're afraid of looking foolish if they do other than the "elitist" science.
The greatest odds of finding proof of life are to find some kind of fossilized evidence. Scanning the Mars surface by sweeping the microscopic imager back and forth as Spirit travels or at rest seems to me to be an efficient way of increasing the odds.